Elliptic Flow of Charm and Strange Hadrons in High-Multiplicity p+Pb Collisions at ?sNN=8.16??TeV
Yükleniyor...
Tarih
2018
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
American Physical Society
Erişim Hakkı
Özet
The elliptic azimuthal anisotropy coefficient (v2) is measured for charm (D0) and strange (K0S, ?, ??, and ??) hadrons, using a data sample of p+Pb collisions collected by the CMS experiment, at a nucleon-nucleon center-of-mass energy of ?sNN=8.16??TeV. A significant positive v2 signal from long-range azimuthal correlations is observed for all particle species in high-multiplicity p+Pbcollisions. The measurement represents the first observation of possible long-range collectivity for open heavy flavor hadrons in small systems. The results suggest that charm quarks have a smaller v2 than the lighter quarks, probably reflecting a weaker collective behavior. This effect is not seen in the larger PbPb collision system at ?sNN=5.02??TeV, also presented.
Açıklama
Anahtar Kelimeler
Relativistic heavy-ion collisions, Collective flow
Kaynak
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
Sayı
Künye
PHYSICAL REVIEW LETTERS 121, 082301 (2018)
